Nitro-Decorated Microporous Covalent Organic Framework (TpPa-NO<sub>2</sub>) for Selective Separation of C<sub>2</sub>H<sub>4</sub> from a C<sub>2</sub>H<sub>2</sub>/C<sub>2</sub>H<sub>4</sub>/CO<sub>2</sub> Mixture and CO<sub>2</sub> Capture
Xiao‐Hong Xiong, Liang Zhang, Wei Wang, Neng‐Xiu Zhu, Lu-Zhu Qin, Huanfeng Huang, Liu‐Li Meng, Yang‐Yang Xiong, Mihail Bãrboiu, Dieter Fenske, Peng Hu, Zhang‐Wen Wei
Abstract
A nitro-decorated microporous covalent organic framework, TpPa-NO2, has been synthesized in a gram scale with a one-pot reaction. It can effectively selectively separate C2H4 from a C2H2/C2H4/CO2 mixture and capture CO2 from CO2/N2 based on ideal adsorption solution theory calculations and transient breakthrough experiments. Theoretical calculations illustrated that the hydrogen atoms of imine bonds, carbonyl oxygen, and nitro group show high affinity toward C2H2 and CO2, playing vital roles in efficient separation.
Topics & Concepts
Microporous materialCovalent bondImineNitroMaterials scienceHydrogen bondCovalent organic frameworkAdsorptionAmine gas treatingSelective adsorptionPhysical chemistryChemical engineeringOrganic chemistryCatalysisMoleculeChemistryAlkylEngineeringComposite materialCovalent Organic Framework ApplicationsMetal-Organic Frameworks: Synthesis and ApplicationsMembrane Separation and Gas Transport